I figured but lets continue the thought exercise.
Ok let’s use that and use two other pieces of info I forgot we had.
From Alicia we can see that the ride will have single load, so that throws my dual load concept out of the window.
Now, from your concept art I remember that someone idiotically uploaded a bunch of proprietary assembly and design documents for the ride vehicles on Dropbox! Thanks improper IP handling! So the lap bar is 72.5" wide, the average male shoulder width is 16.1". Using some math and it's 4.5 shoulder widths per row. I'll round down to 4 people per row for THRC.
Knowing that the ride loads one train at a time and the new 32 guests per train figure a new train will need to be dispatched every 32 seconds (arrive, load, check, dispatch) which isn't tenable. So lets mess around some.
Lets drop this capacity to 2400, roughly the old GMR capacity and we get a train every 48 seconds. Better and matches that likely minimum dispatch internal. Dropping capacity to 2000 gives us 57.6 second dispatch intervals. This feels even more likely the goal of Disney. For a one minute dispatch interval the THRC would be 1920.
So assuming 32 ride guests per train (4 per row, 2 rows per car, 4 cars per train) dispatching every 60 seconds gives us 1920 guests an hour. Also dispatch intervals of 48 seconds with 3 guests per row is 1800 guests an hour. So I believe actual capacity will be around 1800 guests an hour.
Reasonable people knew those were always the total amount of trains Universal has on hand and we tried to emphasize that. Disney and Universal have more cars on hand than they use so they can perform rolling maintenance. All trustworthy sources claimed a top of 12 trains at one time on the ride as designed. Some said "no way gotta be 8" and others saying "probably a few less". I was on the count for saying TTD was designed for 6 trains and runs with 5, so two or three less than designed. Right now the ride is running around 10 with 11 during a UC event.
We shouldn't wait till it opens to call BS on a number 25% higher than one of Disney's highest capacity attractions ever created anymore than someone claiming BS on a claim it has the capacity of Astro Orbiter.